Thanks Pap. I was waiting for you to chime in on this.
I bought 40 like you suggested in another post then I started asking around the docks, they said 15/w40, looked for 25/w40 like my marine guy said, even at tractor supply and nobody had it, except NAPA only had 4 quarts. I ended up with15/w40 on sale at NAPA for $12 a gallon